通过TEM、FTIR及XRD等检测手段对原位合成法制备羟基磷灰石/碳纳米管复合材料过程中碳管的表面改性及影响羟基磷灰石包覆的因素进行了系统探讨.研究表明,浓酸处理后,碳纳米管表面产生大量官能团;阴离子表面活性剂十二烷基磺酸钠(SDS)的加入提高了碳纳米管与水的相容性;实验中随着(NH4)2HPO4溶液的加入,羟基磷灰石原位沉积并形成包覆层.结果发现:碳纳米管的表面改性、适当的pH值和陈化温度是得到羟基磷灰石连续包覆层的关键因素.
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